diff --git a/src/App.tsx b/src/App.tsx
index 1e7e2be..1f7b931 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -163,10 +163,10 @@ const AppContent: React.FC = () => {
       
       return (
         (filters.platform === '' || (creator.platforms || []).some(platform => 
-          platform.toLowerCase().includes(filters.platform.toLowerCase())
+          platform && platform.toLowerCase().includes(filters.platform.toLowerCase())
         )) &&
         (filters.focus === '' || (creator.focus || []).some(f => 
-          f.toLowerCase().includes(filters.focus.toLowerCase())
+          f && f.toLowerCase().includes(filters.focus.toLowerCase())
         )) &&
         (filters.status === '' || creator.status === filters.status) &&
         (filters.type === '' || creator.type === filters.type) &&
diff --git a/src/components/SEO.tsx b/src/components/SEO.tsx
index f94fda1..b2c9691 100644
--- a/src/components/SEO.tsx
+++ b/src/components/SEO.tsx
@@ -8,9 +8,9 @@ interface SEOProps {
 }
 
 const SEO: React.FC<SEOProps> = ({
-  title = 'Creator Agencies - Find the Perfect Agency for Your Content',
-  description = 'Discover and compare creator agencies. Find the perfect agency for your content creation needs with our comprehensive database of agencies, their focus areas, and requirements.',
-  keywords = 'creator agencies, content creator, influencer marketing, agency database, content creation, social media agencies'
+  title = 'DACH Creator Agenturen - Finde die perfekte Agentur für deinen Content',
+  description = 'Entdecke und vergleiche Creator-Agenturen im DACH-Raum. Finde die perfekte Agentur für deine Content Creation mit unserer umfassenden Datenbank von Agenturen, deren Schwerpunkten und Anforderungen.',
+  keywords = 'creator agenturen, content creator, influencer marketing, agentur datenbank, content creation, social media agenturen, DACH, Deutschland, Österreich, Schweiz'
 }) => {
   return (
     <Helmet>
@@ -31,7 +31,7 @@ const SEO: React.FC<SEOProps> = ({
       
       {/* Additional SEO tags */}
       <meta name="robots" content="index, follow" />
-      <meta name="language" content="English" />
+      <meta name="language" content="German" />
       <meta name="revisit-after" content="7 days" />
       <link rel="canonical" href="https://agencies.xboxdev.com" />
     </Helmet>
diff --git a/src/components/SearchAndFilter.tsx b/src/components/SearchAndFilter.tsx
index eb1abc8..8663f76 100644
--- a/src/components/SearchAndFilter.tsx
+++ b/src/components/SearchAndFilter.tsx
@@ -5,14 +5,14 @@ import { useTranslation, useNumberFormat } from '../i18n/I18nProvider';
 
 interface SearchAndFilterProps {
   onSearch: (query: string) => void;
-  onFilterChange: (filters: {
+  onFilterChange: (filters: Partial<{
     platform: string;
     status: string;
     minFollowers: number;
     focus: string;
     type: string;
     pricing_model: string;
-  }) => void;
+  }>) => void;
   data: Creator[];
 }